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基于（GaIn）O纳米线的低功耗气体传感器的制备、表征及性能

Fabrication, Characterization and Performance of Low Power Gas Sensors Based on (GaIn)O Nanowires.

作者信息

López-Aymerich Elena, Domènech-Gil Guillem, Moreno Mauricio, Pellegrino Paolo, Romano-Rodriguez Albert

机构信息

Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, Carrer Martí i Franquès 1, E-08028 Barcelona, Spain.

Departament d'Enginyeria Electrònica i Biomedical, Universitat de Barcelona, Carrer Martí i Franquès 1, E-08028 Barcelona, Spain.

出版信息

Sensors (Basel). 2021 May 11;21(10):3342. doi: 10.3390/s21103342.

DOI:10.3390/s21103342
PMID:34065003
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8151396/
Abstract

Active research in nanostructured materials aims to explore new paths for improving electronic device characteristics. In the field of gas sensors, those based on metal oxide single nanowires exhibit excellent sensitivity and can operate at extremely low power consumption, making them a highly promising candidate for a novel generation of portable devices. The mix of two different metal oxides on the same nanowire can further broaden the response of this kind of gas sensor, thus widening the range of detectable gases, without compromising the properties related to the active region miniaturization. In this paper, a first study on the synthesis, characterization and gas sensing performance of (GaIn)O nanowires (NWs) is reported. Carbothermal metal-assisted chemical vapor deposition was carried out with different mixtures of GaO, InO and graphite powders. Structural characterization of the NWs revealed that they have a crystalline structure close to that of InO nanowires, with a small amount of Ga incorporation, which highly depends on the mass ratio between the two precursors. Dedicated gas nanosensors based on single NWs were fabricated and tested for both ethanol and nitrogen dioxide, demonstrating an improved performance compared to similar devices based on pure InO or GaO NWs.

摘要

对纳米结构材料的积极研究旨在探索改善电子器件特性的新途径。在气体传感器领域，基于金属氧化物单纳米线的传感器表现出优异的灵敏度，并且可以在极低的功耗下运行，使其成为新一代便携式设备极具潜力的候选者。在同一纳米线上混合两种不同的金属氧化物可以进一步拓宽这类气体传感器的响应范围，从而扩大可检测气体的范围，同时不影响与有源区小型化相关的性能。本文报道了对(GaIn)O纳米线（NWs）的合成、表征及气敏性能的首次研究。采用GaO、InO和石墨粉末的不同混合物进行碳热金属辅助化学气相沉积。纳米线的结构表征表明，它们具有接近InO纳米线的晶体结构，含有少量的Ga掺入，这高度依赖于两种前驱体之间的质量比。制备了基于单纳米线的专用气体纳米传感器，并对乙醇和二氧化氮进行了测试，结果表明与基于纯InO或GaO纳米线的类似器件相比，其性能有所提高。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/e14d423e3b32/sensors-21-03342-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/7d5670a9d7b6/sensors-21-03342-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/e14d423e3b32/sensors-21-03342-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/c2e39a13dc0d/sensors-21-03342-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/f7682c9a3364/sensors-21-03342-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/86bbdb76b568/sensors-21-03342-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/40e945733071/sensors-21-03342-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/057ce07f44f7/sensors-21-03342-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/ddea025ca606/sensors-21-03342-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/d354fda059b7/sensors-21-03342-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/7d5670a9d7b6/sensors-21-03342-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/8bf46f1266a1/sensors-21-03342-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/df1048ae8f83/sensors-21-03342-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4df3/8151396/e14d423e3b32/sensors-21-03342-g012.jpg

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